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Motherwort · Leonurus cardiaca

Why are there bugs on my Motherwort?

Motherwort is a hardy plant, but aphids often find their way to the tender new growth. These tiny insects suck sap and can weaken your plant if left unchecked. Check the undersides of your leaves first.

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pests on a plant
Photo: Jules Verne Times Two, CC BY-SA 4.0

Check these first

  1. Inspect the undersides of the leaves for clusters of insects.
  2. Look for sticky residue on the stems.
  3. Check for fine webbing near the growing tips.

Likely causes

  1. Aphid infestation

    Most likely

    How to tell: You will see small green or black insects clustering on the stems and leaf undersides. The leaves might also look sticky from the honeydew they leave behind.

    What to do: Spray the plant with a steady stream of water to knock them off. If they persist, apply insecticidal soap or neem oil every 5 to 7 days until they are gone.

  2. Spider mites

    Possible

    How to tell: Look for fine webbing between the stems and tiny yellow stippling on the leaves. These pests thrive in dry, hot conditions.

    What to do: Increase the humidity around your plant by misting it regularly. Wipe the leaves down with a damp cloth and treat with neem oil.

Pests on other plants

Find out what's wrong with your motherwort

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

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When to worry

A few aphids are manageable, but if the plant is covered and growth is stunted, you need to act immediately. It is normal to see an occasional stray bug outdoors.

Stopping it coming back

Keep your plant healthy with consistent watering and good airflow. Regularly inspect the new growth for early signs of visitors.

Motherwort: pests? Check yours with a photo

Every plant is a little different. Take a photo of your motherwort and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

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Questions people ask

Can I use dish soap to kill the aphids?
Yes, but use a mild, non-detergent soap mixed with water. Avoid soaps with degreasers or fragrances that might burn the leaves.
Will these bugs kill my Motherwort?
Usually no, but they can stress the plant and make it susceptible to other issues. Treat them early to keep your plant vigorous.

Guides to these causes

More problems with Motherwort

Back to the Motherwort guide

This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.